Pleuromeia

Pleuromeia is an extinct genus of lycophytes related to modern quillworts (Isoetes). Pleuromeia dominated vegetation during the Early Triassic across Eurasia and elsewhere, in the aftermath of the Permian–Triassic extinction event. During this period, it often occurred in monospecific assemblages. Its sedimentary context in monospecific assemblages on immature paleosols is evidence that it was an opportunistic pioneer plant that grew on mineral soils with little competition. It spread to high latitudes under greenhouse climatic conditions.

No picture of Pleuromeia was found. Wikipedia, Wikidata, iDigBio and Smithsonian Open Access were searched and had none. GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Pleuromeia, or no answer at all. This entry cannot say which.

On record

Recorded, not inferred
Sits inside
PleuromeiaceaePBDB
Diet
"photoautotroph"PBDB, for Streptophyta
Environment
freshwater,terrestrialPBDB, for Lycopodiophyta

Time the record covers

At least 13 million years on record.

The record covers at least 250.8 Mya to 237 Mya. No occurrence read is dated outside 251.902 Mya to 201.4 Mya.

Permian — about 0 of 50 occurrencesEarly Triassic — about 40 of 50 occurrencesEarly TriassicMiddle Triassic — about 8 of 50 occurrencesMiddle TriassicLate Triassic — about 2 of 50 occurrencesLate TriassicEarly Jurassic — about 0 of 50 occurrences253–251 Mya — about 15 occurrences251–249 Mya — about 12 occurrences249–248 Mya — about 9 occurrences248–246 Mya — about 6 occurrences246–244 Mya — about 2 occurrences244–242 Mya — about 1 occurrence242–241 Mya — about 1 occurrence241–239 Mya — about 1 occurrence239–237 Mya — about 1 occurrence237–235 Mya — about 0.3 occurrences235–234 Mya — about 0.2 occurrences234–232 Mya — about 0.2 occurrences232–230 Mya — about 0.2 occurrences230–228 Mya — about 0.2 occurrences228–227 Mya — about 0.2 occurrences227–225 Mya — about 0.0 occurrences225–223 Mya — about 0.0 occurrences223–221 Mya — about 0.0 occurrences221–220 Mya — about 0.0 occurrences220–218 Mya — about 0.0 occurrences218–216 Mya — about 0.0 occurrences216–214 Mya — about 0.0 occurrences214–213 Mya — about 0.0 occurrences213–211 Mya — about 0.0 occurrences211–209 Mya — about 0.0 occurrences209–207 Mya — about 0.0 occurrences207–206 Mya — about 0.0 occurrences206–204 Mya — about 0.0 occurrences204–202 Mya — about 0.0 occurrences202–200 Mya — about 0.0 occurrences250.8 Mya237 Mya253 Mya200 Mya

50 occurrences of Pleuromeia on record, most of them in the Early Triassic. Bar height is expected occurrences, not a count: each fossil is spread across the span it is dated to, so a tall narrow bar means tight dating and a low wide one means loose.

When

50 occurrences

These are dates about fossils, not the animal: the record can only begin after it arose and end before it died out, so either end may reach further. Shares are expected occurrences: a fossil dated to a span is counted partly in each period it straddles. More on what this infers.

Found in

13 formations

Zhitkov — 43.03°N, 131.93°EZhitkov — 42.93°N, 131.92°ESolling — 51.80°N, 11.80°ESolling — 51.80°N, 11.71°EHeshangzou — 41.00°N, 117.90°EHeshangzou — 35.20°N, 112.30°ETongchuan — 35.20°N, 109.20°EHardegsen — 51.80°N, 11.80°ECacheuta — 33.00°S, 69.10°WErmayong — 39.70°N, 111.00°ELinjia — 41.30°N, 123.70°EKumanskaya Suite — 44.70°N, 44.90°ETsvetkovomisskaya Suite — 74.90°N, 112.70°ETaganozhinskaya Suite — 68.00°N, 127.00°EArcadia — 24.83°S, 148.00°ERybinsk — 58.02°N, 39.04°E

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The named rock units Pleuromeia has been recovered from, largest first. Drawn where the rock is now, not where it formed. 30 occurrences have no formation on record, which is common for older literature.

Pleuromeia and its relatives

Early Triassic

Where Pleuromeia and its relatives were recorded in the Early Triassic.

Found in the same rock

169 taxa

The Paleobiology Database records 46 sites for Pleuromeia, and this reads all of them. The number is how many of those sites it was catalogued from too. The 24 sharing the most are listed.

This is not a list of everything alive at the time. It is only what has come out of the same ground as this animal and been written down.

Entered from

18 references

Each of the 50 occurrences read was entered from one of these publications, ordered by how many each accounts for. This is not a search for papers mentioning the name. 6 further references are not listed. Entries link to doi.org where the Paleobiology Database holds an identifier, and to its own record where it does not. Relayed as the Paleobiology Database holds them, not checked against what they resolve to.

Media and terms

Media content0

No picture of Pleuromeia was found. Wikipedia, Wikidata, iDigBio and Smithsonian Open Access were searched and had none.

GBIF was asked, and what came back is not recorded: nothing, or a picture this site could not tie to Pleuromeia, or no answer at all. This entry cannot say which.

No 3D scan was found. Smithsonian Open Access, MorphoSource and Sketchfab were all searched.

The description on this site

Licence
CC BY-SA 4.0

This is what the site found, which is not the same as what exists.

Keep going

What may have been alongside itPleuromeiaceae through timeFormations of the Early TriassicThe world it lived on

Occurrence data from the Paleobiology Database, CC BY 4.0. Corda 1852